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Smart city article details
| Title | Impact Of Digital Technology-Urban Form Interaction On Pm2.5; [数字技术-城市形态交互作用对城市 Pm2.5 的影响] |
|---|---|
| ID_Doc | 30342 |
| Authors | Zhao J.; Chen L.; Yang J.; Kang T.; Guan X.; Li Z. |
| Year | 2025 |
| Published | Research of Environmental Sciences, 38, 6 |
| DOI | http://dx.doi.org/10.13198/j.issn.1001-6929.2025.04.26 |
| Abstract | As an emerging technology for urban social development and upgrading, digital technology has been extensively integrated into industrial structure optimization and smart city construction. Existing studies have ignored the synergistic effects between digital technology and urban spatial morphology, and the impact of their complex interactions on PM2.5 emissions is still unclear. Using panel data from 272 cities in China from 2005 to 2020, this study employs the Optimal Parameters-based Geographical Detector method to investigate the individual and interactive effects of digital technology and urban spatial morphology on PM2.5 emissions. The results demonstrate that: (1) In the socio-economic dimension, digital technology and population density are core drivers of PM2.5 emissions, with digital technology exhibiting an inverted 'U'-shaped nonlinear relationship with emissions. In terms of urban morphology, the impact of urban centrality and shape complexity (PC3) is the most significant, where single-center layout and complex patch morphology exacerbate PM2.5 emissions. (2) All interactive effects between digital technology and urban morphology surpass the impact of individual factors. Specifically, the interaction effects between digital technology and urban compactness-connectivity (PC1) are enhanced by 3.20%-24.76% compared to the individual factor superposition intensity, while those with size-connectivity (PC4) show a 10.95%-44.80% enhancement. The interaction between digital technology and centrality-shape complexity (PC3) increased by 6.08%-8.46% from 2005 to 2015 compared to the superposition intensity, but declined by 0.16% in 2020, revealing the potential for coordinated PM2.5 governance through digital technology and complex urban morphology. (3) The independent emission reduction effect of digital technology is easily weakened by the 'technology-space' synergy contradiction. Although digital technology independently suppresses PM2.5 emissions, its interactions with factors such as GDP growth, urban centrality, and shape complexity diminish the mitigation benefits. We recommend transcending single-factor governance frameworks to establish a 'technology empowerment-spatial adaptation' collaborative pathway, optimizing urban spatial planning through digital technology to achieve the synergistic enhancement of environmental governance and spatial optimization. © 2025 Editorial Board, Research of Environmental Sciences. All rights reserved. |
| Author Keywords | digital technologies; interaction effects; optimal geodetector; PM<sub>2.5</sub>; urban form |
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